WARNING! - Throttle Problem
Thread Starter
|
Junior User
Joined: May 2007
Posts: 58
Likes: 0
From: Southern California
WARNING! - Throttle Problem
Hello All,
I just had very scary experience with my truck. ( 08 F-350 Lariat DRW 6.4 PSD 4X4 Tow Boss 4.30 5,400 miles on motor ) Got in the truck Thursday morning, started it up like evey morning, put my foot on the brake and shifted the gear into drive. This is where the fun stared. The truck accelerated to full throttle ( on its own with my foot on the brake the rpm went to 4,000 + ) I was literally standing on the brake to hold the truck back. I shifted the truck into Park and the rpms kept racing to over 5,000 rpm. ( it was as if I had the gas pushed all the way down to the floor ) That is when I shut off the ignition ( and went to change my underwear ) I started it up again and everthing was normal. I called the dealer and talked to my service advisor and he asked me if I was sure it was not in regen mode. I told him I know what regen mode is. I told him the motor has over 5,000 miles on it and I have experienced MANY regens. I told him when the truck goes into regen mode, the rpm goes to about 1,100 and when you put your foot on the brake the rpms drop immediately to about 500 rpm. Once he was convinced I knew what I was talking about he told me to get the truck in ASAP ( apparently they know about this problem and there is an update that needs to be done to the computer ) I Brought the truck in on Thursday and had it back on Friday with a new update on the engine computer. He advised me to wait about a minute after a cold start before shifting the truck into gear in case it happens again. I was just wondering if anyone else experienced this with their 08 ( very scary ) I hope the update corrects this problem. The tech said that every truck bult befor July needs to get this update. I would suggest you contact your dealer and have it done ASAP. I was very lucky the truck did not get into an accident and nobody got hurt.
I just had very scary experience with my truck. ( 08 F-350 Lariat DRW 6.4 PSD 4X4 Tow Boss 4.30 5,400 miles on motor ) Got in the truck Thursday morning, started it up like evey morning, put my foot on the brake and shifted the gear into drive. This is where the fun stared. The truck accelerated to full throttle ( on its own with my foot on the brake the rpm went to 4,000 + ) I was literally standing on the brake to hold the truck back. I shifted the truck into Park and the rpms kept racing to over 5,000 rpm. ( it was as if I had the gas pushed all the way down to the floor ) That is when I shut off the ignition ( and went to change my underwear ) I started it up again and everthing was normal. I called the dealer and talked to my service advisor and he asked me if I was sure it was not in regen mode. I told him I know what regen mode is. I told him the motor has over 5,000 miles on it and I have experienced MANY regens. I told him when the truck goes into regen mode, the rpm goes to about 1,100 and when you put your foot on the brake the rpms drop immediately to about 500 rpm. Once he was convinced I knew what I was talking about he told me to get the truck in ASAP ( apparently they know about this problem and there is an update that needs to be done to the computer ) I Brought the truck in on Thursday and had it back on Friday with a new update on the engine computer. He advised me to wait about a minute after a cold start before shifting the truck into gear in case it happens again. I was just wondering if anyone else experienced this with their 08 ( very scary ) I hope the update corrects this problem. The tech said that every truck bult befor July needs to get this update. I would suggest you contact your dealer and have it done ASAP. I was very lucky the truck did not get into an accident and nobody got hurt.
Senior User
Joined: Jul 2007
Posts: 283
Likes: 0
From: Kansas
Had something just like this happen to me except I was driving when it happenend.
I took it to the dealer where I was at the time,they did not seem to be concerned and said that they could get me in next week. I plan to take it to the dealer were I purchased it as soon as I can. Everyone on this sight seemed to think it was the floor mats. One thing I will say is the brake did no good when this happend, the only thing that I did that seemed to stop it was I stomped the gas pedal a couple of times and the it idled back down.
I took it to the dealer where I was at the time,they did not seem to be concerned and said that they could get me in next week. I plan to take it to the dealer were I purchased it as soon as I can. Everyone on this sight seemed to think it was the floor mats. One thing I will say is the brake did no good when this happend, the only thing that I did that seemed to stop it was I stomped the gas pedal a couple of times and the it idled back down.
Elder User
Joined: Jun 2007
Posts: 826
Likes: 1
From: The Sunshine State
My Son is a Ford diesel tech. He told me that the throttle linkage on the 6.4 is electronic. There is no physical link between the pedal and the engine just a wire. It is very possibly a computer glitch. I have never experienced this on my 6.4 but if it should happen to me the 1st thing I would do is go for the key.
Senior User
Joined: Jul 2007
Posts: 283
Likes: 0
From: Kansas
Originally Posted by Nipperdog
My Son is a Ford diesel tech. He told me that the throttle linkage on the 6.4 is electronic. There is no physical link between the pedal and the engine just a wire. It is very possibly a computer glitch. I have never experienced this on my 6.4 but if it should happen to me the 1st thing I would do is go for the key.
Elder User
Joined: Jan 2006
Posts: 684
Likes: 2
From: Tucson, AZ
I believe the 1st post like this said that he tried but could not turn the key off. That is definitely not a good situation.
Trending Topics
Senior User
Joined: Jul 2007
Posts: 283
Likes: 0
From: Kansas
Originally Posted by kimminau2
I believe the 1st post like this said that he tried but could not turn the key off. That is definitely not a good situation.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
Super Moderator
Joined: Jul 2004
Posts: 21,113
Likes: 3,939
From: Ohio
I checked the TSB's out and nothing specific to your problem. I found one item of interest here.
The following is a list of normal operation while the vehicle is in regeneration, and do not require repair. If you are not sure if the vehicle is in regeneration, IDS can be used to monitor the Diesel Particulate Filter (DPF) PID.
The following is a list of normal operation while the vehicle is in regeneration, and do not require repair. If you are not sure if the vehicle is in regeneration, IDS can be used to monitor the Diesel Particulate Filter (DPF) PID.
- Engine idle speed can be 1100 to 1200 RPM in park/neutral with foot off brake.
- High idle speed drops to within 50 RPM of normal idle when the brake pedal is touched, PRNDL is actuated, or clutch is actuated.
- White smoke in cold ambients is normal and the amount will be increased during regeneration.
- Powertrain power is limited to 325 horsepower (HP).
- Engine responsiveness may be slightly different than normal operation.
- During initiation of regeneration, exhaust smell may be noticed - especially on new vehicles.
- Powertrain sound will be different including air induction noise (including flutter on deceleration or engine shut down), exhaust noise, and changes in engine radiated noise.
- During regeneration, exhaust temperatures are elevated.
- The throttle body is only active during the regeneration process and during shutdown.
- EGR is not operating during regeneration.
Thread Starter
|
Junior User
Joined: May 2007
Posts: 58
Likes: 0
From: Southern California
Originally Posted by Maxium4x4
- Engine idle speed can be 1100 to 1200 RPM in park/neutral with foot off brake.
- High idle speed drops to within 50 RPM of normal idle when the brake pedal is touched, PRNDL is actuated, or clutch is actuated.
Elder User
Joined: Jan 2006
Posts: 684
Likes: 2
From: Tucson, AZ
Originally Posted by stroke this
If you are refering to my post I did shut the key off and turned it back on and the same thing happend. It was at that point that I stomped the gas pedal and it went back to a idle.
Senior User
Joined: Jul 2007
Posts: 283
Likes: 0
From: Kansas
Originally Posted by kimminau2
No I was not referring to you (at least I don't think so). I was referring to the post where the guy had his truck run away with him and could not stop. Had cops chasing him .....
Posting Guru
Joined: Jun 2007
Posts: 1,501
Likes: 2
From: Henderson, NV
Originally Posted by DonVito
I was standing on the brake to hold the truck back from taking off and the idle did not go down. the idle was over 4000 RPM WITH my foot on the brake.
There somthing missing in this story.
Senior User
Joined: Jul 2007
Posts: 283
Likes: 0
From: Kansas
Originally Posted by SANDDEMON08
WOW, the 6.4 has a max governed engine speed of 3700 RPM, and you stated that your went to over 5,000 RPM. I have a hard time believeing this, the motor would have pitched a rod, the trans would have blowin, somthing. There somthing missing in this story.
There somthing missing in this story.
Posting Guru
Joined: Jun 2007
Posts: 1,501
Likes: 2
From: Henderson, NV
Originally Posted by stroke this
When mine acted up the gauge went over 5000 rpm and the engine was definately reved high but I don't know what the actual engine speed was. Did not seem to have a rev limit. sounds weard to me and I probalbly would not beleave if it had not happend to me.